Patents by Inventor Stephanie L. McDaid

Stephanie L. McDaid has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sample time offset alignment of electric power system samples independent of a common time source
    Patent number: 11949222
    Abstract: Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) using samples and sample time offset from merging units. The merging units do not require access to a common time signal. The IED does not require storage of a communication latency with the merging units. The sample time offset corresponds to a latency between obtaining the sample and receipt of the sample at the IED. The IED aligns samples from various merging units using sample time offset values communicated from the merging units to the IED. The IED performs monitoring and protection functions using the time aligned samples.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: April 2, 2024
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Lisa Gayle Nelms, Tony J. Lee, Bryon S. Bridges, Derek Lautenschlager, Guillermo Ramirez Conejo, Stephanie L. McDaid, Nishchal Sharma, Bharat Nalla, Vinodev E. Rajasekaran
  • Communication system tester and related methods
    Patent number: 11431605
    Abstract: The present disclosure relates to systems and methods for testing communication systems. In one embodiment, a communication device tester may include a traffic disciplining subsystem to generate a first stream of data packets satisfying a metric and may communicate the first stream of data packets to a test device in a first test scenario. A delay subsystem may generate a variable delay in a second stream of data packets and communicate the second stream of data packets to the test device in a second test scenario. A data corruption subsystem may corrupt a third stream of data packets and communicate the third stream of data packets to the test device in a third test scenario. A test subsystem may determine whether the test device satisfies at least one criterion of each of the first test scenario, the second test scenario, and the third test scenario.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: August 30, 2022
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Glenn C. Bethmann, Mauricio G. Silveira, Stephanie L. McDaid, Andrew W. Rash
  • SAMPLE TIME OFFSET ALIGNMENT OF ELECTRIC POWER SYSTEM SAMPLES INDEPENDENT OF A COMMON TIME SOURCE
    Publication number: 20220239089
    Abstract: Disclosed herein is a system for time aligning electric power system measurements at an intelligent electronic device (IED) using samples and sample time offset from merging units. The merging units do not require access to a common time signal. The IED does not require storage of a communication latency with the merging units. The sample time offset corresponds to a latency between obtaining the sample and receipt of the sample at the IED. The IED aligns samples from various merging units using sample time offset values communicated from the merging units to the IED. The IED performs monitoring and protection functions using the time aligned samples.
    Type: Application
    Filed: November 30, 2021
    Publication date: July 28, 2022
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Lisa Gayle Nelms, Tony J. Lee, Bryon S. Bridges, Derek Lautenschlager, Guillermo Ramirez Conejo, Stephanie L. McDaid, Nishchal Sharma, Bharat Nalla, Vinodev E. Rajasekaran
  • COMMUNICATION SYSTEM TESTER AND RELATED METHODS
    Publication number: 20220191123
    Abstract: The present disclosure relates to systems and methods for testing communication systems. In one embodiment, a communication device tester may include a traffic disciplining subsystem to generate a first stream of data packets satisfying a metric and may communicate the first stream of data packets to a test device in a first test scenario. A delay subsystem may generate a variable delay in a second stream of data packets and communicate the second stream of data packets to the test device in a second test scenario. A data corruption subsystem may corrupt a third stream of data packets and communicate the third stream of data packets to the test device in a third test scenario. A test subsystem may determine whether the test device satisfies at least one criterion of each of the first test scenario, the second test scenario, and the third test scenario.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 16, 2022
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Glenn C. Bethmann, Mauricio G. Silveira, Stephanie L. McDaid, Andrew W. Rash